body{
    background-color: #e3f2fd;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}
h1, footer{
    background-color: #1565c0;
    margin: 0;
}
h1, h2, h3, p{
    margin: 4em, 3em;
}
.wrapper{
    min-height: 95vh;
    margin: 0;

}
footer{
   width:100%;
   height:4vh;
   text-align: center;
   padding-top: 1vh;
   margin-top: auto;
   margin-bottom: 0;
}